From: angico <angico@...>
Date: 2009-10-05T21:47:06+09:00
Subject: Re: regex simplifier?

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On Monday 05 October 2009 09:28:55 Roger Pack wrote:
> Question.
> Currently I am somewhat of a novice to regex's.
> For example, I can't remember what \d means versus \D -- which one 
is a
> digit, and which one isn't?
>
> I'm wondering if there's any tool out there anyone knows about that
> simplifier this, like
> DIGIT* (in the regex) or something so that it's easier to understand
> what you're doing.
>
> Thanks.
> -r

From man perlre

\d Match a digit character
\D Match a non-digit character

RE typically uses lowercase characters to mean direct sense, and 
uppercase characters to mean the contrary, for example, \s matches 
whitespace, \S matches non-whitespace, \w word, \W non-word, etc.

-- 
angico
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